Multiple Cross-Site Scripting (XSS) were discovered in EPESI 1.8.1.1 , which can be exploited to execute arbitrary code.
The vulnerabilities exist due to insufficient filtration of user-supplied data in multiple HTTP POST parameters passed to the EPESI-master/modules/Utils/Tooltip/req.php URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.